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Finding the Third Proportional to 56,922 and 84,921

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Solution

The third proportional to 56,922 and 84,921 is: 126,692.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,922 : 84,921 = 84,921 : x
  2. Step 2: Convert to fraction form
    56,922/84,921 = 84,921/x
  3. Step 3: Cross multiply
    56,922x = 84,921 × 84,921
  4. Step 4: Simplify right side
    56,922x = 7,211,576,241
  5. Step 5: Solve for x
    x = 7,211,576,241/56,922
  6. Step 6: Final answer
    x = 126,692.25

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.